An Investigation of Biomass Tar Removal from Gasification by Non-thermal Plasma Reactor
Keywords:
Non-thermal plasma, reverse vortex flow gliding arc, naphthalene, tar removal, gasificationAbstract
The producer gas produced from biomass gasification was found to be limited in its use as an internal combustion engine due to the problem of tar. The purpose of this research is to develop a low temperature gliding arc plasma reactor that can be utilized to remove tar from gasification by using naphthalene compounds as model tar. The naphthalene concentration inlet is between 823-9,750 mg/m3 with a constant total gas feed rate of 30 LPM and a high voltage of 10-12 kV. The plasma assisted tar removal was found to increase with applied electrical energy as it can decompose the chemical structure of the compounds in the model tar. It was found that the removal efficiency was in the range of 70-87% and the energy efficiency was in the range of 3.63-20.07 g/kWh. This study shows the reverse vortex flow gliding arc reactor could be achieved with a higher flow rate of producer gas than a conventional gliding arc, which is suitable for further development in gasification systems.
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